Question
The sum of the digits of the smallest number which, when multiplied by 1800, gives a perfect cube, is :
Answer: Option C Answer: (c)1800 = 2 × 2 × 2 × 3 × 3 × 5 × 5 = $2^3 × 3^2 × 5^2$To make 1800 a perfect cube, it must be multiplied by 15 (least number).>∴ Required sum = 1 + 5 = 6
Was this answer helpful ?
Submit Comment/FeedBack